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                <ol class="chapter"><li class="chapter-item expanded "><a href="index.html"><strong aria-hidden="true">1.</strong> Introduction</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="linting.html"><strong aria-hidden="true">1.1.</strong> Linting</a></li></ol></li><li class="chapter-item expanded "><a href="coding-standards.html"><strong aria-hidden="true">2.</strong> Coding standards</a></li><li class="chapter-item expanded "><a href="version-numbers.html"><strong aria-hidden="true">3.</strong> Version numbers</a></li><li class="chapter-item expanded "><a href="release-process.html" class="active"><strong aria-hidden="true">4.</strong> Release process</a></li><li class="chapter-item expanded "><a href="tips-and-tricks.html"><strong aria-hidden="true">5.</strong> Tips and tricks</a></li><li class="chapter-item expanded "><a href="tracing.html"><strong aria-hidden="true">6.</strong> Tracing</a></li></ol>
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                    <h1 class="menu-title">The Rustup developer guide</h1>

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                        <h1 id="making-a-release"><a class="header" href="#making-a-release">Making a release</a></h1>
<p>Before making a release, ensure that <code>rustup-init.sh</code> is behaving correctly,
and that you’re satisfied that nothing in the ecosystem is breaking because
of the update. A useful set of things to check includes verifying that
real-world toolchains install okay, and that <code>rust-analyzer</code> isn’t broken by
the release. While it’s not our responsibility if they depend on non-stable
APIs, we should behave well if we can.</p>
<p>As a maintainer, you have two options to choose from when cutting a new
release: a beta release or an official release.
The main difference between the two is that they use different values for
the <code>RUSTUP_UPDATE_ROOT</code> environment variable:</p>
<ul>
<li>A beta release is deployed on <code>https://dev-static.rust-lang.org/rustup</code>.</li>
<li>An official release is deployed on <code>https://static.rust-lang.org/rustup</code>.</li>
</ul>
<p>By switching between those two values, Rustup effectively provides two “self
update channels”, making beta testing possible with <code>rustup self update</code>.</p>
<p>Producing the final release artifacts is a bit involved because of the way
Rustup is distributed.
Below is a list of things to be done in order to cut a new [b]eta release
or an official [r]elease:</p>
<ol>
<li>[b/r] In a separate PR:
<ol>
<li>If the version strings in <code>Cargo.toml</code>s haven’t been updated:
<ul>
<li>Decide what the new version number <code>$VER_NUM</code> should be.
<blockquote>
<p><strong>Note:</strong> We always increment the <em>minor</em> number unless:</p>
<ul>
<li>A major incompatibility has been introduced in this release:
increment the <em>major</em> number instead.</li>
<li>This release is a hotfix because the last one had a defect:
increment the <em>patch</em> number instead.</li>
</ul>
</blockquote>
</li>
<li>Update <code>Cargo.toml</code> and <code>download/Cargo.toml</code> to have that same new
version number, then run <code>cargo build</code> and review <code>Cargo.lock</code> changes.
If all looks well, make a commit.</li>
</ul>
</li>
<li>Update <code>CHANGELOG.md</code> accordingly if necessary.</li>
</ol>
</li>
<li>[b/r] After merging the PR made in step 1, in a separate PR:
<ol>
<li>Update the commit shasum in <code>rustup-init.sh</code> to match the latest commit
on <code>master</code>.</li>
</ol>
</li>
<li>[b/r] After merging the PR made in step 2, sync <code>master</code> to <code>stable</code> using
<code>--ff-only</code>:
<ul>
<li><code>git fetch origin master:master</code></li>
<li><code>git checkout stable &amp;&amp; git merge --ff-only master</code></li>
<li><code>git push origin HEAD:stable</code></li>
</ul>
</li>
<li>[b/r] While you wait for green CI on <code>stable</code>, double-check the
functionality of <code>rustup-init.sh</code> and <code>rustup-init</code> just in case.</li>
<li>[b/r] Ensure all of CI is green on the <code>stable</code> branch.
Once it is, check through a representative proportion of the builds looking
for the reported version statements to ensure that
we definitely built something cleanly which reports as the right version
number when run <code>--version</code>.</li>
<li>[r] Make a new PR to the <a href="https://github.com/rust-lang/blog.rust-lang.org">Rust Blog</a> adding a new release announcement post.</li>
<li>[b/r] Ping someone in the release team to perform the actual release.
They can find instructions in <code>ci/sync-dist.py</code>.
<blockquote>
<p><strong>Note:</strong> Some manual testing occurs here, so hopefully they’ll catch
anything egregious in which case abort the change and roll back.</p>
</blockquote>
</li>
<li>[b] Once the beta release has happened, post a new topic named “Seeking beta
testers for Rustup $VER_NUM” on the <a href="https://internals.rust-lang.org">Internals Forum</a>.</li>
<li>[r] Once the official release has happened, prepare and push a tag on the
latest <code>stable</code> commit.
<ul>
<li><code>git tag -as $VER_NUM -m $VER_NUM</code> (optionally without <code>-s</code> if not GPG
signing the tag)</li>
<li><code>git push origin $VER_NUM</code></li>
</ul>
</li>
</ol>

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